"use strict";

const EventEmitter = require('events').EventEmitter;
const utils = require('../../util/utils');
const TcpSocket = require('./tcpsocket');

const ST_STARTED = 1;
const ST_CLOSED = 2;

// private protocol, no need exports
const HEAD_SIZE = 4;

/**
 * websocket protocol processor
 * @class
 * @memberof hybridConnector
 */
class Processor extends EventEmitter
{
  constructor(closeMethod) {
    super();

    this.closeMethod = closeMethod;
    this.state = ST_STARTED;
  }

  add (socket, data) {
    if(this.state !== ST_STARTED) {
      return;
    }
    let tcpsocket = new TcpSocket(socket, {headSize: HEAD_SIZE,
                                           headHandler: utils.headHandler,
                                           closeMethod: this.closeMethod});
    this.emit('connection', tcpsocket);
    socket.emit('data', data);
  }
  
  close() {
    if(this.state !== ST_STARTED) {
      return;
    }
    this.state = ST_CLOSED;
  }
}


module.exports = Processor;
